ZIP archive of about 7.14 MB labelled A7050 A70, with a Brazilian repair website tag in the name. The name does not say whether it holds firmware, a schematic or service files, and no brand is given, so the contents should be inspected before use. A70 and A7050 could refer to a phone model or to a board name, but that cannot be confirmed from the name alone. Extract it with any archiver, read any included notes, and check that the model on the device label matches before flashing or relying on it.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @esquemaseletricos. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.